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2026-08-19 - 23:52
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Wed Aug 19, 2026 13:01:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3732599199157,39cyclictest0-21swapper/2212:25:2915
3732599199157,39cyclictest0-21swapper/2212:25:2815
3734099188133,44cyclictest0-21swapper/3312:35:0227
3734099188133,44cyclictest0-21swapper/3312:35:0127
3734099188133,44cyclictest0-21swapper/3312:35:0127
3732599188178,8cyclictest0-21swapper/2212:15:4415
3732599188178,8cyclictest0-21swapper/2212:15:4315
3732599188178,8cyclictest0-21swapper/2212:15:4315
3730999186177,6cyclictest0-21swapper/809:20:1938
3730999186177,6cyclictest0-21swapper/809:20:1938
3730999186177,6cyclictest0-21swapper/809:20:1938
373409918572,103cyclictest0-21swapper/3312:25:1227
373409918572,103cyclictest0-21swapper/3312:25:1227
3732599185162,14cyclictest0-21swapper/2212:20:2115
3732599185162,14cyclictest0-21swapper/2212:20:2115
3732499184118,60cyclictest0-21swapper/2109:59:1614
3732499184118,60cyclictest0-21swapper/2109:59:1514
3732499184118,60cyclictest0-21swapper/2109:59:1514
3730699181134,38cyclictest0-21swapper/510:15:4235
3730699181134,38cyclictest0-21swapper/510:15:4235
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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